Improvement in hemmer for sewing-machine



E. HOWELL.

Hemmer for Sewing Machines.

No. 96,809. Patented Nov. 16, 1869.

LO 17572 195; 8,6 r I 71/1), em?

fibfilwxm dinit eli swat fitted Gtflfliw.

E. HOWELL, or ASH'TABU-LA, Oll 'Ii Letters Patent No. 96,809, datedNovember 16, 1869.

IMPROVEMENT IN HEMMER FOR SEWING-MACHINE.

The Schedule referred to in these Letters Patent and making part of thename To all whom it may concem Be it known that I, EFHOWELL, ofAshtabula, in the county of Ashtabula, and State of Ohio, have inventedcertain new and useful Improvements in Hemmers for Sewing-Machines; andI do hereby declare that the following is a full and completedescription of the'same, reference being had to the accompanyingdrawings, making pait of this specification, in which Figure 1 is a topview of the hemmer.

Figure 2, a view of the front end.

Figure'3, a View of the rear end.

Figure 4, a side-view.

. Figure 5, a view of a hemmer, to which reference will bemade.

Figure 6, a view of the plate from which the hemmer is formed, allof-which represent enlarged views.

Like letters of reference represent like parts in the different views.

This invention consists in the construction of a pcculiar device that isattached to a sewing-machine, whereby the edge of a piece of cloth-isturned or folded over to form a hem.

In fig. 1, A represents the folder or hemmer, which consists of a thinplate of metal, cut to the peculiar shape shown in fig. 6.

The limb B is folded backward over the central secvtion of the plate,and again forward upon itself, forming an S-shapecurvatm'e G, as shownin fig. 2, which represents an end view of the hemmer.

The limb 1) is then bent upward and over upon the S-shape member B, thusembracing or covering said member, as shown in fig. 2, a side view ofwhich is shown in fig. 4.

To the central section E, fig. 4, of the plate, is given a peculiarfolding twisting curvature, which, as will be seen, brings the edge Fover to .and even with its opposite edge. Over, reversely, upon this, isbent the member G, as shown in figs. 4 and 1,which latter figure alsoshows the twisting curvature given to the central section of the plate.These peculiar curvatures and twistings gi en to the plate will, oninserting the edge of the cloth therein, and drawing the same throughthe entire length of the convolution of the hemmer,

,turn down the raw edge and tuck it under a second fold, in the mannerproper for a hem, neatly and evenly throughout the entire length of thecloth. Thus,-one corner of. the edge of the cloth is slightly'curved, sothat the raw edge will fit in the lower part of the curve 0 given to themember B. At the same time it is passed underthe curve of the 'member D,as indicated by the dotted line a, fig. 2. This produces the firstfolding down of the raw edge upon the cloth.

Now, on drawing the cloth in and along toward the opposite end, theturned-down edge is folded under, in consequence of the peculiar twistgiven to the middle section of the plate, and completely turned ortucked in and pressed down by the member G, as the hem emerges from thehemmer at the,end F, thereby completing the hem for the operation of theneedle.

As the cloth is being drawn in, a slight tension is given to it by thespring H, under which it is passed along, and is thereby not .onlyprevented from puckering, but is also kept straight, and guided into thehemmer,. which is secured to the table of the machine in advance of theneedle, by the arm J, to which the hemmer is attached. v

Fig. 5 represents a modification of fig. 1, the difference being thatthe member B is given but one curve, aiulsubstituting, for the second, atongue, J, which facilitates the folding under of the raw edge of thecloth, in connection with the twist given to the middle of the hemmerat.K.

Though this construction of the hemmer does very well, it is found, .byexperience, that the one above described is the best.

\Vhatl claim as my improvement, and desire to secure by Letters Patent,is

The hemmer or folder A, when formed of the piece of metal B I) E G, inthe manner described, having tension-spring H and arm I, by which itisattached to the sewing-machine, all constructed and arranged tooperate substantially in the manner and for the purpose described.

E. HOWELL.

\Vitncsses:

W. H. BURRIDGE, FRANK S. ALDEN.

